SQL Server/T-SQL Tutorial/Math Functions/COS

COS Returns a float value that is the cosine of the angle passed in as a parameter.

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Note that this angle passed in must be in radians. 7> 8> SELECT COS(1.2) 9> GO

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    0.36235775447667362

(1 rows affected) 1> SELECT COS(ACOS(0.5)) 2> GO

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    0.49999999999999989

(1 rows affected)</source>